When visiting a nearby friendly squad, they will display the player's gamer-tag over their heads and will kill enemy minions and players to the best of their ability.
They are useful as a distraction, following you around and warning you when an enemy pilot is near, either through their deaths or their yells.
Best used in Attrition mode, as they will kill other minions, something not helpful in the other game modes.
The Conscription Burn card is only effective when you have a friendly grunt squad under your control. As grunts are the weakest minions in the game, especially towards enemy Pilots, they will perish expediently without the help of a Pilot.